You know that if You open/close position on BitMex by limit order (putting orders to market and waiting for price to fill it) not by market price then BitMex paying You fee for opening it 👀 You are paying fees only if You open/close at market price. Lets say You are opening position with 0.1 BTC. If You do it by limit order, BitMex will pay You around 0.0020 - 0.0040 BTC for opening it, but if You open it by Market Price, You will pay them around 0.0040 - 0.0050 (yes they are taking more than they giving 😅 but it is still good) Now if You open 10 positions by limit orders You have 0.02 - 0.04 BTC ($200 - $400) profit only for this (without profit/loss exactly from trading), but if You open by market price You will pay them around 0.04 - 0.05 ($400 - $500)! Remember, always try to open position by limit order, then You will dont loss and even earn on fees. Hope it will help You safe some money 😁 Your TCA!